Reuters Starbucks has begun rolling out tumblers with a black-and-white, Halloween-themed pattern. The cups glow in the dark. Starbucks is also selling a six-pack of reusable cups with glow-in-the-dark lids for hot drinks. While you can't use the cups in stores amid the pandemic, customers can show the new Halloween-themed tumbler when ordering for a 10-cent discount. Visit Business Insider's homepage for more stories. Fall is here for Starbucks, and that doesn't just mean new drinks.